Rocker side-bearing truck.



N0 MODEL.

J. C. WANDS.

RGCKER SIDE BEARING TRUCK.

APPLICATION FILED NOV. 28. 1903.

PATBNTED MAR."1,1904.

Auml- .hug

Patented March 1, 1904.

PTE1\ ITy OFFicE.

AJOHN o.`w-ANDs, for sr. Louis, MISSOURI.

ROCKER SIDE-BEARING TRUCK.

SPECIFICATION forming part of- Letters Patent No. 758,766, dated March1,1904.

l Application filed November 28, 1903l SeriallNoI 183,026. (No model.)

To all whom it may concern:

Be it known that I, JOHN C. WANDs, a citi- Zen of the United States,residing at the city of'St. Louis, State of Missouri, have invented acertain new and useful Improvement in Rocker Side-Bearing Trucks, ofwhich the following is a full, clear, and exact description, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, formingpart of this specification, in which*4 Figure 1 is a top plan view of myimproved rocker side-bearing truck. Fig. 2 is a vertical sectional Viewshowing the bearing-truck mounted on its support, and Fig. 3 is a sideelevational view partly in section.

This invention relates to a new and useful improvement in rockerside-bearing trucks designed particularly for use in connection withrailway-cars, the object being to yieldingly support a rocking bearingin position on a spring-follower, said rocking bearing being located invertical alinement with the archbars of the truck, the top arch-barpassing through an opening therein, so that in the event of derailmentthe rocking bar will not be displaced.

My invention consists in the construction, arrangement, and combinationof the several lparts of the device, allas will be hereinafter describedand afterward pointed out in the claims.

In the drawings, 1 indicates the body-bolster, upon which the body ofthe car is mounted, from the center of which depends a pivot lug or boss2. It will be observed that I do not use center bearings, as the car issupported at its four corners by the side bearings and not at a centralpoint with respect to the bolsters.

3 indicates atruck-bolster or transom,which consists of vertical sidewalls ianged outlswhich are rein/forcedv by strengthening-webs providingseats for the lower arch and tie bars. Lugs 5 are also cast integralwith the side walls of this transom, to which the brake-hangers areconnected.

6 indicates shoulders formed on the inner faces of the sidewalls,between which is vertically guided a spring-follower 7, forming a'seat for the lower end of the rocker-bar 8.

This spring-follower is supported by springs 9, arranged upon thespring-seat of the transom 3 in the same manner as bolster-Springs areusually mounted and arranged. The rocking side bearing 8 is preferablyconstructed with an enlarged lower end in order that the rollingengagement with the follower may be extended, and through an opening inthis rocking bearing is arranged the top arch-barlO, whose function isto prevent displacement and also to arrest the rocking bar at itsextreme rocking positions. The upper end of this rocking bar is enlargedto form a rolling head whose upper surface is curved on an arc of acircle described from la center preferably common to the arc of thelower end of said rocking bar. The body-bolster l is formed with a seatto receive the upper end of the rocking bar, which seat is slightlydepressed for well-understood reasons.

From the above it will be seen that the weight of the car-body issupported at its four corners by the rocking bars, which bars are inturn yieldingly held in position by the spring-supported follower.supporting the car-body does not in any way interfere with the swingingmotion of the truck on its pivot 2, as the rocking bars accommod atesuch movement by rolling on their respective contact-faces- Theweight ofthe car is applied directly in vertical alinement with the arch-bars,and this fact contributes materially to the life of the structure,reducing the necessity for repairs to a minimum.

I am aware that minor changes in the construction, arrangement, andcombination of the several parts of my device can be made andsubstituted for those herein shown and described without in the leastdeparting from the nature and principle of my invention.

The method of Having thus described the invention, what is claimed asnew, and desired to be secured by Letters Patent, is

1. The combination with a transom, of a spring-supported follower guidedvertically therein, and a rocking bar having rolling engagement withsaid follower; substantially as described.

2. The combination with a transom having a spring-supported followerarranged therein, a top arch-bar, and a rocking bar in verticalalinement with the arch-bar and supported by said follower, said barhaving a rolling engagement with said follower; substantially asdescribed.

3. The combination with a transom, of a spring-supported followerarranged therein, a top arch-bar in vertical alinement with saidfollower, a rocking bar provided with an opening through which the toparch-bar passes, said rocking bar being in vertical alinernent with thearch-bar, and a body-bolster with mense which said rocking bar has arolling engagement; substantially as described.

4. The combination with a transom having vertical guideways, of aspring-follower arranged therein, springs for supporting said follower,a seat in the upper face of said fol lower, a rocking bar having rollingengagement with said seat, and provided with an opening for the passageof the top arch-bar, with which arch-bar the said rocking bar is invertical alinement, and a body-bolster having a pivotal connection withthe truck and having a recessed seat for rolling engagement with theupper end of the rocking bar; substantially as described. y Y

In testimony whereof I hereunto afiix my signature, in the presence oftwo witnesses, this 25th day of November, 1903.

JOHN C. WANDS.

Witnesses:

GEORGE BAKEWELL, RALPH KALIsH.

